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LCD frustrations and a case

A project log for Funktion Generator

An AVR DDS function generator.

tim-savageTim Savage 03/28/2017 at 23:310 Comments

When I built my first bench power supply I spent quite a bit of time searching to find a case to house my project, many are quite expensive (one option was to by a crap device from ebay/aliexpress gut it for the case) before I can accross some nice folded metals cases sold by an Australian company Wiltronics. They had a limited stock of them left @ $15AU each so I bought two. I remembered I had the second one stashed away and it will make a perfect case for this project.

Second point here is the ongoing frustration with the LCD initialisation. Once initialised (using a modified Seeed driver) it starts up, if I then switch to an Adafruit driver for the same chipset (which is a lot more efficient and provides much better response) it all works fine until you power off the LCD for a long period, afterwhich it will no longer initialise. Power cycling the display and it still initialises so I'm assuming there is some capacitance maintaining the initialisation or similar. Is annoying and difficult to debug with the display needing to be powered off some time for the issue to arrise.

Anyway...

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